Flier crown



July 6 `1926.

H. G. CARLSON FLIER CROWN 2 Sheets-Sheet 1- Filed Deo. 29, 1923 ""IIIIHHH @Humm @yvan/lm. t

July 6 ,1926. f i 1,591,154

H. G. CARLSON FLIER CROWN Filed Dec. 29, 1923 2 Sheets-Sheet 2 Patented July'G; 1926.

p' mamas fe. "Camisea, ogwacesm'a; Massiicausaws; issrnoiai ign-drawings, in which.

Figs. 1 and 2 areV side and edigeviews f-the original `blanl'V out out from the'sheet r'stock to be vused fo1--theinanufacture of a' Crovn1 ign accor-'dance with Athis process; ,j

y Figs land f4 are simi-lar vviews i. showing of pag.3;

Y lOfF'gf. 6;: V vF1gs..9 and 10 are similar views showing;

' the resultfof ythefirst stepof the operation;V Fig. k5 is a sectional view on Ithai-ine:"5-1-:5l

Figs.. 6 y and Y:7 "are andlgedgefvievvs showing thiemext step -in Vtheprocess; f

Fig. 8 is a sectionalfview on Vthe line 8-1-8 the next step; y l

Fig. 11 is atransversesectional view lon the line 11-11 of Fig. 9; i

Figs. 12 and 13 are views similar to Fi s.

9 c and 10 showing the alteration of tieV blank therein by ,bending it tothrow the hubs for the balance rod andthread guide out ofalignment With the rest ofthe blank to prepare it for the next Voperation; 4`v

Figs. 14 land 15 are similar views sh`oW- 'y ing the final result of the process;V and Fig.` 16 is a sectional Vview onthe line 16-16 of Fig. 15 showing the cross-section.

For'the purpose of making a crown as shown inFigs.l 14, 15 and 16 I take asheet of met-a1 and cut it out by cuttinggclies intol the form A shown in Fig. v1. This has the original thickness of `the metal stock. as indicated iny Fig. 2. The next step of the process is indicatedA by the blank Bshown in Figs. 8, 4 and 5.y This is formed :from the blank Aaby com.;-V vpressing itV to thin the edges of the stock and to form two V'convex surfaces-.20 on the arms' Substantially from end 'to lend therecnV and Vpfrfovidfeit ivith three bosses 22 and 28; `The -tlvvo end bosses .21 and 123 are' `subfstantially' roundwvhilethej central boss 2,2 is A somewhatY lrj lo`1`1 g 11n.` shape. These yare formed' by lorovi'ding three circular diepressions 24, =and 26S inf the back aniil extending part vvay `tlgn-"oughQ."fthfefV bosses. Thesebosses yhave theiz 4outenfaces' at a "slightly greaten distance from the Lrear Y of;

the blank 'thanV` `was the, original thickness of vthe `blank because of the' depressions` inad'e behindthem..1v @ne ofthese 'depressions is' "provided "with" an '(nte'nsion4 27 which -constitu'tesa' thread* guide thelinislv-ied'iartiele, as appear.;v

, blank is` "then put into janeth'ervsetojf dies,- 'thef thickness kof "its edges 'diminished .slightly andthree Vperforatio'n'fs,28, 29 and 530 are-'formed Vextending the depressions 124,- 25 and 26: YThese perforations are smal-lfei-than the depressionsfand "ofcoursev eX-V Iten-'dall theV Way throug'fhv the bosses; Y At Y the saine vtime .the-bosses' are' somewhat Vfin- Y ished oft .on their? convex surfaces., inf-the f andthe'ir `extreme jconvexigends" can i ly desired.' VIt Will benoticed thatthis blank f C has a .convex surface 31 on one side and.

that it has a flat edged flange 32 all'the Way, Y around Y it and of substantially the same ground ofrfla't,I-ashindieatedf 2in' Fig! L,

thickness throughout. i

The blankC shown in Figs. Gland This then placedfin a setof cuttinlgi-and shaping y dies. V In-these diesthe flat flange 32 is out Y f Off,` leaving the'.` outline 'of the blank. D,l 90

shown in Figs. 9, `lOand 11. It Willbe seen by reference to Fig. 11 that the thread guide 7 vgroove 27 is practically unchanged all this time. In fact,fthesurface in which this is located has vremained fiat and level through-.- out the operations' up tothe-.present time. In these dies the vthreey bosses previously referred to -aresha'ped up further and finished so as to have cylindrical surfaces. The per,-

forations throughfthese bosses are also en- 5 .I

larged toftheir final size so as to fit accurately the three elements which are to be placed inl them and brazedk or V otherwise secured to them tor. forni the finished'article. vThe vconvexi end edlgesof` the bosses can be `[ground or otherwise finished loff'v afterthis 10oY V dieing ope/Ration' to the 'shape shown Y New the anni is placed in @behangen Y time.

vknown shape of a, crown for a iier. It `con- Vtains the threel perforations abovev specified which are shaped by the'dies and sized in- -side tov exactly the properrsizes to receive and the two end v.bosses are bentv out of the Y plane of the backas indicated in-the'blank E shown Yin Figs. 172 and 13. No other cha-nge is madeat this time. j

The iinal operation is to bendthetwo rarms of this blank tor forni the finished Varticle F shown in the vlast three figures.

This bendingVv takes place at the pointsY 35 just atV the Vopposite Y` sides of themiddle bosses Y22. Norfurther bending of the two 'end bosses 21 and 23 has to be done at this This iinished article 'is of the Vwell inthenithe bearing stem, the hollow guide and the balance rod. These'three elements are not shown herein as they constitute no part of the present lprocess but they are Y shown vin myv above identified application.

They are inserted iirthei1,1'espective perforations which they tit accurately and are brazed thereto `or otherwise;V secured and whenY this donethe Hier itself is completed. It will be noticedthat up to the formation l of thefblank D shown in Figs. 9 and l0', the

, in the next blank E the two bosses 2l and 23 V:are bent backwardly and outwardly vaway Qiroin this planevso that they come into' angular relationfwith'each other. Thenin forming the Vnal article vfrom 4the blank .Y E the arins oit' ,the article are bent in the opposite directionYV at aA point nearY the" yboss not brought back into vthe-sanne planey asthe boss 23, but' vare'iprojected furtherV vfrom the'basepoi' the article thanV the boss 2l.

The. axes Vof the perforations are parallel` witheach other and the endsurfaces of the three bosses are also in parallel planes. This provides thertwo slantingfarms andthe three bosses :perforated on parallel axes so'thatj teg the three elements that are inserted and liXed v The two bosses 2lY and 23 are'notnecessarily at exactly the same distance from the central l boss. Y Y Y n Although I have ilustrated andV described only'a single orrn ofthe invention vI Yam in them willbe parallel with eachother. Y

aware of therfact that modifications can be made therein by any person skilled in the art without. departing romthe scopeoit' the invention as expressed inthe claims. vTheretore I do noty Wish to be limited to allV the details of Yconstruction and procedure here* 1 in shown and clai1n-is:.- y Y Y v Asan article of manufacturera lier crown piece formed of sheet-metal and having two described but what do integral end bosses, and an integral boss at Vthe center, said end and central bosses being `'perforated all the way through for the pur- 'pose described.

In testimony whereof I havehereunto kaffixed my signature. :1" Y

. HJALMARG. CARLSON.

4e 22 so vasV to bring theitwo bosses21 andV 23 t `back into parallel relationship. 1 They are 

